| Peer-Reviewed

Damage Estimation and Stress Singularity Study Using a Coherent Gradient Sensing Method

Received: 17 November 2016     Accepted: 13 December 2016     Published: 7 January 2017
Views:       Downloads:
Abstract

In this paper, the stress singularity in homogenous material was studied using an optical experimental method. The study on stress concentration is of great research value to evaluate the damage inside materials. Coherent gradient sensing (CGS) is introduced to study the mechanical behavior of homogeneous material which was widely used in industry and research. The governing equations of CGS which is used to represent the optics-mechanics relation of the singular yield near the point of the external force are derived. The experimental result shows this CGS method as a nondestructive methodology is capable of estimating the load with high accuracy.

Published in Engineering Physics (Volume 1, Issue 1)
DOI 10.11648/j.ep.20170101.12
Page(s) 8-13
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2017. Published by Science Publishing Group

Keywords

Stress Singularity, Coherent Gradient Sensing, Damage Estimation, Optical-Mechanics

References
[1] Atkinson C. and List R. D., “Steady state crack propagation into media with spatially varying elastic properties,” International Journal of Engineering Science, 16, pp. 717-730, (1978).
[2] Delale F. and Erdogan F., “The crack problem for a nonhomogeneous plane,” Journal of Applied Mechanics, 50, pp. 609-614, (1983).
[3] Zhang J., Gu J., Li L., Huan Y. and Wei B., “Bonding of alumina and metal using bulk metallic glass forming alloy,” International Journal of Modern Physics B, 23, pp. 1306-1312, (2009).
[4] Eischen J. W., “Fracture of nonhomogeneous materials,” International Journal of Fracture, 34, pp. 3-22, (1987).
[5] Huang G., Wang Y., and Yu S., “Fracture analysis of a functionally graded interfacial zone under plane deformation," International journal of solids and structures, 41, pp. 731-743, (2004).
[6] Chalivendra V. B., Shukla A. and Parameswaran V., “Quasi-static stress fields for a crack inclined to the property gradation in functionally graded materials,” Acta Mechanica, 162, pp. 167-184, (2003).
[7] Jiansheng, G., Bingchen, W., Lei, L., Jinjun, Z., and Zhiwei, S., “Effect of Structural Relaxation on Hardness and Shear Band Features of Zr_ (64.13) Cu_ (15.75) Ni_ (10.12) Al_ (10) Bulk Metallic Glass During Indentation”, Rare Metal Materials and Engineering, S4, (2008).
[8] Marur P. R., “Tippur H V. Evaluation of mechanical properties of functionally graded materials,” Journal of Testing and Evaluation, 26, pp. 539-545, (1998).
[9] Butcher R. J., Rousseau C. E. and Tippur H. V., “A functionally graded particulate composite: preparation measurements and failure analysis,” Acta Materials, 47, pp. 259-268, (1999).
[10] Parameswaran V. and Shukla A., “Processing and characterization of a model functionally gradient material,” Journal of Material Science, 35, pp. 21-29, (2000).
[11] Tippur H. V., Krishnaswamy S., Rosakis A. J., “A coherent gradient sensor for crack tip deformation measurements: analysis and experimental results,” International Journal of Fracture, 48, pp. 193-204, (1991).
[12] Bruck H. A. and Rosakis A. J., “On the sensitivity of CGS: Part I-A theoretical investigation of accuracy in fracture mechanics applications,” Optics and Lasers in Engineering, 17, pp. 83-101, (1992).
[13] Zhang J., Koo B., Liu Y., Zou J., Chattopadhyay A. and Dai L., “A novel statistical spring-bead based network model for self-sensing smart polymer materials,” Smart Materials and Structures, 24, pp. 085022, (2015).
[14] Zhang J., Koo B., Subramanian N., Liu Y. and Chattopadhyay A., “An optimized cross-linked network model to simulate the linear elastic material response of a smart polymer,” Journal of Intelligent Material Systems and Structures, DOI: 1045389X15595292, (2015).
[15] Ye J., Iwata M., Takumi K., Murakawa M., Tetsuya H., Kubota Y., Yui T., Mori K., “Statistical Impact-Echo Analysis Based on Grassmann Manifold Learning: Its Preliminary Results for Concrete Condition Assessment”, InEWSHM-7th European Workshop on Structural Health Monitoring, 2014 Jul 8.
[16] Ye, J., Iwata, M., Murakawa, M., Higuchi, T., Kubota, Y. and Yui, T., “Noise Reduction Methods for Hammering Impact Acoustic Inspection: An Experimental Comparison” Structural Health Monitoring 2015. (2015).
[17] Parameswaran V. and Shukla V., “Crack-tip stress fields for dynamic fracture in functionally gradient materials,” Mechanics of Materials, 31, pp. 579-596, (1999).
[18] Giannakopoulos A. E. and Suresh S., “Indentation of Solids with gradients in elastic properties,” Internatinal Journal of solids and structures, 34, pp. 2357-2392, (1997).
[19] Zhang J., Liu K., Luo C. and Chattopadhyay A., “Crack initiation and fatigue life prediction on aluminum lug joints using statistical volume element-based multiscale modeling,” Journal of Intelligent Material Systems and Structures, 24, pp. 2097-2109, (2013).
[20] Zhang J., Johnston J. and Chattopadhyay A., “Physics-based multiscale damage criterion for fatigue crack prediction in aluminium alloy,” Fatigue & Fracture of Engineering Materials & Structures, 37, pp. 119-131, (2014).
[21] Tippur H. V., Krishnaswamy S., Rosakis A. J., “A coherent gradient sensor for crack tip deformation measurements: analysis and experimental results,” International Journal of Fracture, 48, pp. 193-204, (1991).
[22] Bruck H. A. and Rosakis A. J., “On the sensitivity of CGS: Part I-A theoretical investigation of accuracy in fracture mechanics applications,” Optics and Lasers in Engineering, 17, pp. 83-101, (1992).
[23] Bruck H. A. and Rosakis A. J., “On the sensitivity of CGS: Part II-An experimental investigation of accuracy in fracture mechanics applications,” Optics and Lasers in Engineering, 18, pp. 25-51, (1993).
[24] Lee Y. J., Lambros J., and Rosakis A., “Analysis of coherent gradient sensing (CGS) by Fourier optics,” Optics and Lasers in Engineering, 25, pp. 25-53, (1996).
[25] Zhang, J., Xu, W. and Yao, X.F., Load Detection of Functionally Graded Material Based on Coherent Gradient Sensing Method. Journal of Mechanics, pp.1-12, (2016).
Cite This Article
  • APA Style

    Joseph Scura, Rick Woods, Mark Sandor. (2017). Damage Estimation and Stress Singularity Study Using a Coherent Gradient Sensing Method. Engineering Physics, 1(1), 8-13. https://doi.org/10.11648/j.ep.20170101.12

    Copy | Download

    ACS Style

    Joseph Scura; Rick Woods; Mark Sandor. Damage Estimation and Stress Singularity Study Using a Coherent Gradient Sensing Method. Eng. Phys. 2017, 1(1), 8-13. doi: 10.11648/j.ep.20170101.12

    Copy | Download

    AMA Style

    Joseph Scura, Rick Woods, Mark Sandor. Damage Estimation and Stress Singularity Study Using a Coherent Gradient Sensing Method. Eng Phys. 2017;1(1):8-13. doi: 10.11648/j.ep.20170101.12

    Copy | Download

  • @article{10.11648/j.ep.20170101.12,
      author = {Joseph Scura and Rick Woods and Mark Sandor},
      title = {Damage Estimation and Stress Singularity Study Using a Coherent Gradient Sensing Method},
      journal = {Engineering Physics},
      volume = {1},
      number = {1},
      pages = {8-13},
      doi = {10.11648/j.ep.20170101.12},
      url = {https://doi.org/10.11648/j.ep.20170101.12},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ep.20170101.12},
      abstract = {In this paper, the stress singularity in homogenous material was studied using an optical experimental method. The study on stress concentration is of great research value to evaluate the damage inside materials. Coherent gradient sensing (CGS) is introduced to study the mechanical behavior of homogeneous material which was widely used in industry and research. The governing equations of CGS which is used to represent the optics-mechanics relation of the singular yield near the point of the external force are derived. The experimental result shows this CGS method as a nondestructive methodology is capable of estimating the load with high accuracy.},
     year = {2017}
    }
    

    Copy | Download

  • TY  - JOUR
    T1  - Damage Estimation and Stress Singularity Study Using a Coherent Gradient Sensing Method
    AU  - Joseph Scura
    AU  - Rick Woods
    AU  - Mark Sandor
    Y1  - 2017/01/07
    PY  - 2017
    N1  - https://doi.org/10.11648/j.ep.20170101.12
    DO  - 10.11648/j.ep.20170101.12
    T2  - Engineering Physics
    JF  - Engineering Physics
    JO  - Engineering Physics
    SP  - 8
    EP  - 13
    PB  - Science Publishing Group
    SN  - 2640-1029
    UR  - https://doi.org/10.11648/j.ep.20170101.12
    AB  - In this paper, the stress singularity in homogenous material was studied using an optical experimental method. The study on stress concentration is of great research value to evaluate the damage inside materials. Coherent gradient sensing (CGS) is introduced to study the mechanical behavior of homogeneous material which was widely used in industry and research. The governing equations of CGS which is used to represent the optics-mechanics relation of the singular yield near the point of the external force are derived. The experimental result shows this CGS method as a nondestructive methodology is capable of estimating the load with high accuracy.
    VL  - 1
    IS  - 1
    ER  - 

    Copy | Download

Author Information
  • Department of Mechanical Engineering, University of Newcastle, New South Wales, Australia

  • Department of Mechanical Engineering Sciences, University of Surrey, Surrey, United Kingdom

  • Department of Mechanical Engineering, University of Newcastle, New South Wales, Australia

  • Sections